Amphetamines
Trade names: Benzedrine, Adderall, Dexedrine
Street names: Speed, AMP, PEP, Bennies 
Effects: Amphetamines are known to suppress appetite, thirst and fatigue.

The drug usually generates a state of euphoria with an elevated level of self-esteem and confidence, rapid talking, increased communicativeness and social responsiveness. Heavy drug usage may also cause anxiety and paranoia as well as mental problems with schizoid character.

Physiological effects vary greatly, depending on dosage of the drug, but could include dilation of the pupils, bruxism (teeth grinding), lockjaw, hypertension, elevated pulse rate and body temperature. 

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Barbiturates
Trade names:  Barbital, Veronal, Luminal 
Street names: Barbs, Babies, Downers
Effects: Depending on dosage barbiturates can be used as tranquillizer, soporifics (sleeping pills) or anaesthetics. They have sedative, relaxing, anxiolytic and soporific effects, but may also evoke confusion and disorientation.
Side-effects are floppiness, listlessness, exhaustion, blackouts, vertigo, impaired reaction time and disturbance of equilibrium. Drug overdose may lead to unconsciousness, respiratory paralysis or even death due to circulatory failure.
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Benzodiazepines
Trade names: Diazepam (Valium), Rohypnol
Street names: Benzos, Rohpies, Dias, Rohyps
Effects: Benzodiazepines belong to the class of hypnotic and anxiolytic agents. While affecting and slowing down the central nervous system, these drugs aid in the treatment of emotional and psychic disorders. They are mainly utilized for their anxiolytic, anticonvulsant, muscle relaxing, sedative, soporific, amnesic and anti-depressing effects.
As well as barbiturates, benzodiazepines may provoke "hangover" symptoms such as sleepiness, disturbance of equilibrium and vertigo. Under influence of the drug, the consumers' reaction time is significantly impaired.
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Buprenorphine
Trade names: Subutex, Tamgesic, Buprenex, Suboxone
Street names: Subbies, Bupe
Effects: Buprenorphine is a synthetic thebaine derivate with anti-depressing properties. Due to its partial agonistic activity at opioid receptors, it is used as a centrally acting analgesic.
Other common effects are depression of the respiratory centre, constriction of the pupil, hypotension, circulatory disturbance, nausea, regurgitation, euphoria, clouding of  consciousness and hallucinations.[Back to top]

Cocaine
Trade name: Coca - plant
Street names: Coke, Crack, Snow, Charly, Powder, Dust, Nose Candy
Effects: Cocaine suppresses appetite and fatigue, while increasing ones self-esteem, self-confidence, performance, efficiency and activity. Normally, it arouses a feeling of exuberance, hilarity and euphoria.
Physiological effects are elevated heart rate, blood pressure, body temperature and breathing rate as well as dilation of the pupil. Long-term consumption may result in extreme weight loss due to accelerated bodily functions. In addition, symptoms like hallucination, paranoia, states of anxiety, aggression and nervousness occur frequently.
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MDMA
Trade name: -
Street names: Ecstasy, Love Drug, Love Pill, XTC, E, Adam, Eve, Cadillac
Effects: Ecstasy is a slightly hallucinogenic party drug with strong energizing, motivating, euphorigenic and entactogenic effects. It creates an ecstatic state of well-being, blitheness and enjoyment.
Physiological effects are elevated blood pressure, pulse and breathing rate, dilation of the pupil, jaw clenching, xerostomia (dry mouth) as well as hot and cold flushes. 
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Methadone
Trade name: Novocain
Street names: Po, Dollies, Metha, Juice, Dolophine
Effects: Methadone is a synthetic opioid and is used as a strong analgesic (pain killer) as well as a substitute for heroin. It is well known for its sedative, analgesic and euphoric effects.
Common side effects are fatigue, listlessness, poor concentration, constriction of the pupil, hypotension, rapid pulse, increased perspiration and constipation.
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Methamphetamines
Trade names: Isophene, Pervitin
Street names: Crystal, Ice, Yaba, Glas, Meth, Chilli, Shabu
Effects: Methamphetamines act similar to amphetamines, but with a significantly stronger impact on the consumer. Main effects are increased alertness and learning aptitude, low sleep requirement, diminished sensation of hunger and thirst, increased libido, euphoric emotions and elevated body temperature.
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Morphines / Opiates
Trade names: Tramal, Mundidol
Street names: Heroin, H, Dope, Hard Stuff, White Stuff, Dreamer
Effects: Opiates are highly potent drugs. Due to their sedative, relaxing and analgesic effects, opiates often arouse a sleepy, warm, comfortable and pleasant feeling.
Physiological effects are circulatory disturbances, nausea, regurgitation, decelerated heart rate, xerostomia (dry mouth), constriction of the pupil and loss of appetite.
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Phencyclidine
Trade names: Sernyl, Sernylan
Street names: Peace Pill, Angel Dust, Ashy Larry
Effects: Phencyclidine is an analgesic with strong hallucinogenic character. Depending on dosage it may function as a stimulant or depressant. Generally, phencyclidine suppresses sensory stimuli an thus provokes confusion and schizophrenia-like symptoms. For a short time consumers may completely lose touch with reality.
Other indicators for phencyclidine abuse are erythrodermia (reddening of the skin), constriction of the pupil, elevated pulse rate, blood pressure and breathing rate, as well as nausea and regurgitation.
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Tetrahydrocannabinol
Trade names: Marinol,  Cannabinoide  
Street names:  Joint, Grass, Marihuana, Ganja, Herb, Pot, Hashish, Charas, Peace, Spliff
Effects: Depending on the consumers' frame of mind THC causes relaxation, ease of mind, a feeling of well-being and euphoria, but can also lead to anxiety and paranoia.
The main external indicators for THC consumption are red eyes. Other common symptoms are xerostomia (dry mouth), listlessness, laziness, attention deficits and increased appetite ("munchies").
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Trycyclic Antidepressants
Trade names: Stangyl, Saroten
Street name: Stangyl
Effects: Tricyclic Antidepressants influence the re-uptake of neurotransmitters, such as dopamine and serotonin, in the brain that affect our emotions.
When patients suffer from depression the concentration of these transmitters is often unbalanced. Tricyclic Antidepressants can help to re-establish the balance of neurotransmitter concentration and thus have an anti-depressing and activating effect. At the same time they diminish anxiety and restlessness.
Known side effects are xerostomia (dry mouth), constipation and gain in weight.
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